A systematic study for removal of heavy metals from aqueous media using Sorghum bicolor: an efficient biosorbent

被引：26

作者：

Naseem, Khalida ^{[1
]}

Farooqi, Zahoor H. ^{[1
]}

Rehman, Muhammad Z. Ur ^{[2
]}

Rehman, Muhammad A. Ur ^{[3
]}

Begum, Robina ^{[4
]}

Huma, Rahila ^{[5
]}

Shahbaz, Aiman ^{[5
]}

Najeeb, Jawayria ^{[1
]}

Irfan, Ahmad ^{[6
,7
]}

机构：

[1] Univ Punjab, Inst Chem, New Campus, Lahore 54590, Pakistan

[2] Univ Engn & Technol, Dept Chem Engn, Lahore 54890, Pakistan

[3] Lahore Garrison Univ, Dept Comp Sci, Lahore, Pakistan

[4] Univ Punjab, Ctr Undergrad Studies, New Campus, Lahore 54590, Pakistan

[5] Kinnaird Coll Women, Dept Chem, Lahore 54000, Pakistan

[6] King Khalid Univ, Res Ctr Adv Mat Sci, POB 9004, Abha 61413, Saudi Arabia

[7] King Khalid Univ, Fac Sci, Dept Chem, POB 9004, Abha 61413, Saudi Arabia

来源：

WATER SCIENCE AND TECHNOLOGY | 2018年 / 77卷 / 10期

关键词：

biosorbent; effluents; heavy metals; kinetics; pseudo second order; thermodynamics; WASTE-WATER; ADSORPTION; IONS; EXCHANGE; INDUSTRY; MERCURY; BIOMASS; PB(II); CU(II); COPPER;

D O I：

10.2166/wst.2018.190

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This review is based on the adsorption characteristics of sorghum (Sorghum bicolor) for removal of heavy metals from aqueous media. Different parameters like pH, temperature of the medium, sorghum concentration, sorghum particle size, contact time, stirring speed and heavy metal concentration control the adsorption efficiency of sorghum biomass for heavy metal ions. Sorghum biomass showed maximum efficiency for removal of heavy metal ions in the pH range of 5 to 6. It is an agricultural waste and is regarded as the cheapest biosorbent, having high adsorption capacity for heavy metals as compared to other reported adsorbents, for the treatment of heavy metal polluted wastewater. Adsorption of heavy metal ions onto sorghum biomass follows pseudo second order kinetics. Best fitted adsorption isotherm models for removal of heavy metal ions on sorghum biomass are Langmuir and Freundlich adsorption isotherm models. Thermodynamic aspects of heavy metal ions adsorption onto sorghum biomass have also been elaborated in this review article. How adsorption efficiency of sorghum biomass can be improved by different physical and chemical treatments in future has also been elaborated. This review article will be highly useful for researchers working in the field of water treatment via biosorption processing. The quantitative demonstrated efficiency of sorghum biomass for various heavy metal ions has also been highlighted in different sections of this review article.

引用

页码：2355 / 2368

页数：14

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